Safety-pin.



A. G. KAUFMAN.

SAFETY PIN.

APPLIGATION FILED NOV. 22, 1912.

Patented Mar. 10, 1914.

ADOLPI-I G. KAUFMAN, OF NEW YORK, N. Y.

SAFETY-PIN.

Specification of Letters Patent.

Patented Mar. 10, 1914.

Application filed November 22, 1912. Serial No. 732,925.

To all whom it may concern:

Be it known that I, ADoLrH Gr. KAUFMAN, a citizen of the United States, residine at New York, in the county and State of Few York, have invented a new and useful Safety-Pin, of which the following is a specification.

This invention relates to safety pins, and especially to that class having a back formed of two parallel bars; and the objects of my invention are: first, to provide a device to clamp the parts together in a simple and efiicient manner and in a way to make a neater construction; and, second, to simplify and cheapen the construction.

In the accompanying drawing Figure 1, is a plan view of a safety pin constructed according to my invention; Fig. 2, is a side elevation thereof with the prong out of the keeper, with a part in section to show the construction, and showing a slight modification in construction; and Fig. 3, is a sectional view, on the line 33 of Fig. 2.

Like numerals of reference refer to the same oarts in each of the views.

In t e manufacture of safety pins having a double back, or a back with parallel bars, it has been customary to form the pin by bending the wire to form the two parallel sides, and one of the free ends to form the prong, while the other free end is locked around the part of the other side forming the coil to give spring action to the prong. This has necessitated the carrying of one side bar below the other at the coil end in order to make a secure clamp. The operation is expensive as it requires time and extra wire; and it is objectionable for the reason that a projection of one of the bars causes an unevenness in use of the exposed part of the pin which is both unsightly, and forms an obstruction that is easily caught.

It is the object of this invention to avoid such a construction; and in carrying out my invention I bend the wire to form two sides 5, and 6, and the side 5, is carried inward at 7, and is bent at right angles and formed into a semicircle 8, leaving a prong 9, which is normally held in the position shown in Fig. 2, by the curvature of the part 8. The part 6, is carried inward at 10, and the end is bent into an angled semicircle 11, corresponding to and parallel with the bend 8, in the opposite side; but the end 12, is bent downward, and is carried beneath the prong 9, and in engagement therewith whereby the spring action of the part 8, in holding the prong 1n the position shown in Fig. 2, is assisted, as will be understood. To hold the parts together I provide a shield 13, shown n section in Figs. 1, and E2, and in full lines In Fig. 3. This shield is clamped around the curved parallel portions 8, and 11, as shown in Fig. 1, and projects a sufficient distance upon the prong 9, as shown in Fig. 2, to form a stiffener, thereby assisting the spring action of the half circle 8.

By the construction just described, the bars 5, and 6, are brought together on the same plane whereby a perfectly level back is formed, and a pin of neat appearance is provided in an inexpensive construction.

To carry out my object of providinrr a safety pin cheap in construction I provide a housing, or keeper, for the prong, or pin point comprising a sheet metal housing 14:, clamped upon the sides 5, and 6, and pro vided with pin entrances 15, and 16, with an intervening keeper 1?. To provide a stop to prevent the passage of the prong from one entrance to the other without being seated in the keeper, I stamp up a tongue 18, out of the bottom of the housing metal, turning the same upward. In this operation a perforation 19, is formed in the bottom of the keeper, or housing; but as this lies within the body of the base, as clearly shown in Fig. 1, no bad effect is produced. At the same time, the stop 18, is formed without extra metal other than is absolutely necessary to form the housing, thereby cheapening the construction. In manufacture, the housing is formed first and slipped on the end of the pin; and the stop 18, can be punched out and bent up at the same time the sides of the housing are bent down to inclose the sides 5, and 6. As thus formed, the entire pin is cheap in construction, neat in appearance, and effective in use.

In Figs. 2, and 3, a modified form is shown in that the end 12, is bent at right angles to the curved part 11, of the side 6, and is carried in under the curved part 8, of the pin 9. This makes a more positive support for the pin, as will be understood, than the slanting support shown in Fig. l; but it is slightly more expensive to manufacture. The other parts, 5, 6, 7, 10, and 13, are the same as previously described.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. A safety pin comprising two side bars integral at one end, a clamp securing said bars together at the opposite end, and a pin, or prong connected with one of said bars in a semi-circular portion through said clamp, the end of the other bar being bent into engagement with the under side of said pin, or prong adjacent to said semi-circular portion, for the purpose set forth.

2. A safety pin comprising two side bars integral at one end, a clamp securing said bars together at the opposite end, and a pin, or prong connected with one of said bars in a semi-circular portion through said clamp, the end of the other bar being curved in a semi-circle corresponding With the semicircular portion of the other part and lying contiguous thereto Within said clamp, and the free end of said last-named bar being bent at substantially right angles to said circular part and into contact with the under side of said pin, or prong, as and for the purpose set forth.

New York, November 20th, 1912.

ADOLPH G. KAUFMAN. 'Witnesses E. A. EST, G. P. VAN W n.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G." 

